This continues the quotation within a quotation that begins with the words "I have been" in verse 4. The direct quotation can be stated as an indirect quotation. "This is what I want you to tell my master Esau. Tell him that I have been ... Tell him that I have cattle ... in his eyes." (See: [[rc://en/ta/man/jit/figs-quotesinquotes]] and [[rc://en/ta/man/jit/figs-quotations]])
When a person finds favor in the eyes of another, the second person approves of the first person. Here "eyes" are a metonym for the person seeing something, and seeing a person is a metaphor for deciding whether what that person sees is good or bad. Alternate translation: "that you may approve of me" (See: [[rc://en/ta/man/jit/figs-idiom]] and [[rc://en/ta/man/jit/figs-metonymy]] and [[rc://en/ta/man/jit/figs-metaphor]])